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diff --git a/gnuradio-runtime/swig/gr_swig_block_magic.i b/gnuradio-runtime/swig/gr_swig_block_magic.i
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+++ b/gnuradio-runtime/swig/gr_swig_block_magic.i
@@ -0,0 +1,58 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2004,2010,2012 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ *
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+%define GR_SWIG_BLOCK_MAGIC(PKG, BASE_NAME)
+_GR_SWIG_BLOCK_MAGIC_HELPER(PKG, BASE_NAME, PKG ## _ ## BASE_NAME)
+%enddef
+
+%define _GR_SWIG_BLOCK_MAGIC_HELPER_COMMON(PKG, BASE_NAME, FULL_NAME)
+class FULL_NAME;
+typedef boost::shared_ptr<FULL_NAME> FULL_NAME ## _sptr;
+%template(FULL_NAME ## _sptr) boost::shared_ptr<FULL_NAME>;
+%rename(BASE_NAME) PKG ## _make_ ## BASE_NAME;
+%ignore FULL_NAME;
+%enddef
+
+#ifdef SWIGPYTHON
+%define _GR_SWIG_BLOCK_MAGIC_HELPER(PKG, BASE_NAME, FULL_NAME)
+_GR_SWIG_BLOCK_MAGIC_HELPER_COMMON(PKG, BASE_NAME, FULL_NAME)
+%pythoncode %{
+FULL_NAME ## _sptr.__repr__ = lambda self: "<gr_block %s (%d)>" % (self.name(), self.unique_id ())
+%}
+%enddef
+#endif
+
+%define GR_SWIG_BLOCK_MAGIC2(PKG, BASE_NAME)
+%template(BASE_NAME ## _sptr) boost::shared_ptr<gr:: ## PKG ## :: ## BASE_NAME>;
+%pythoncode %{
+BASE_NAME ## _sptr.__repr__ = lambda self: "<gr_block %s (%d)>" % (self.name(), self.unique_id())
+BASE_NAME = BASE_NAME.make;
+%}
+%enddef
+
+%define GR_SWIG_BLOCK_MAGIC_FACTORY(PKG, BASE_NAME, FACTORY)
+%template(FACTORY ## _sptr) boost::shared_ptr<gr:: ## PKG ## :: ## BASE_NAME>;
+%pythoncode %{
+FACTORY ## _sptr.__repr__ = lambda self: "<gr_block %s (%d)>" % (self.name(), self.unique_id())
+FACTORY = BASE_NAME ## _make_ ## FACTORY;
+%}
+%enddef